Events like Rare Drops which have on screen indicators, Level ups, Title/Task unlocks and completion, Win screens with Team poses for Raids, On Screen damage listing and Kill notifications

Sections on Character customisation with Specific Salon background/location to help mark it.

A lot of Hooks to work with the Highlights system and loooong playtimes that would really be assisted by Breakdowns/Highlights and the editing tools provided by your platform.